Home / 42,891.42-64,350.36-19,218.90

Finding the Fourth Proportional to 42,891.42, 64,350.36 and 19,218.90

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Solution

The fourth proportional to 42,891.42, 64,350.36 and 19,218.90 is: 28,834.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,891.42 : 64,350.36 = 19,218.90 : x
  2. Step 2: Convert to fraction form
    42,891.42/64,350.36 = 19,218.90/x
  3. Step 3: Cross multiply
    42,891.42x = 64,350.36 × 19,218.90
  4. Step 4: Simplify right side
    42,891.42x = 1,236,743,133.80
  5. Step 5: Solve for x
    x = 1,236,743,133.80/42,891.42
  6. Step 6: Final answer
    x = 28,834.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.